■ The TIC-8420 is a novel Timer/Counter/Analyzer based on digitization of time intervals in pulse trains with 2.8 ns resolution.
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Ask an ExpertThe TIC-8420 is a novel Timer/Counter/Analyzer based on digitization of time intervals in pulse trains with 2.8 ns resolution.
The software application on the computer can be developed in Python, LabView, C, C++, or any other compatible programming language supporting standard libraries.
The block diagram shows the key components of the instrument from the user’s point of view. To suppress glitches, the input signals are filtered by programmable low-pass filters. Leading or falling edges in the input signals are now counted and converted to timetags (time/count pairs) with a resolution of 2.6 ns. The Capture Control unit decides when to capture a timestamp in the Event-Stream Fifos,based the active Measurement Mode.
The raw data from the Event-Stream Fifos are then converted to meaningful data by the analyzer, also based on the active Measurement Mode. All this happens in parallel, so no information is lost.
Delay is the time difference between the activation of the A and B channel.
Pulse width is the distance between the leading and the subsequent trailing edge of a pulse.
This mode measures the active as well as the inactive time of a pulse. The pulse period and the duty cycle are calculated.
In totalizing counter mode, the Timetag unit continuously counts the active edges of the input signal.
For frequency/period average measurements an interval N must be selected. An event is captured for every Nth leading signal edge.
Stability (vs. ambient temperature): ± 3.0 ppm
Aging (first year): ± 2.0 ppm
Overvoltage Protection (permanent, all inputs): -5.0V … +8.7V
Overvoltage Protection (peak, max. 10 ms, 2% duty cycle): ± 20V
Input Characteristics (Pull-down 33kΩ at each input):
Logic L ≤ 0.8V, Logic H ≥ 2.0V
Output Characteristics (low):
Output Characteristics (high):
3.3V Output Pin (Output current): 1.6 mA max.
Supply Voltage (USB): 5V ± 5%
Supply Current (USB): 150 mA max.
Size (excluding connectors): 111 mm L x 76 mm W x 29 mm H
Weight: 160 g
Operating ambient temperature: 0 … 50°C
Storage temperature: -20 … 80°C
Relative humidity: 5 … 95%, noncondensing
USB connector: Extraction force ≥ 15N, Mating force ≤ 35N
TIC-8420 - Instrument, USB cable (1m), Software Download Card